ILLUSTRATIONS.
PLATES.
PAGE
I. Section of the Blackwater Valley, Essex................... 18
II. Stone Celt from the Neighbourhood of Chelmsford, Essex. .. 30
III. Plan of Ambresbury Banks, Epping Forest............... 58
IV. Imaginary Section through Rampart of a Camp. Section
through Rampart of Ambresbury Banks............... 60
V. Fragments of Pottery found in the Rampart of Ambresbury
Banks............................................. 62
VI. Map of the Rivers of Essex, and the Natural-History
Provinces based on them............................. 80
Sand-pipes in the Chalk at Grays Thurrock, Essex.......... xiv
WOODCUTS.
PAGE
Vanessa Urticae of polychloros type............................ 1
Structure of larvae of Noctuae and Geometrae .................. 21
Cecidomyia Ranunculi...................................... 121
Ceuthorhynchus sulcicollis .................................. 122
Cecidomyia Trifolii ........................................ 123
,, Ulmaria........................................ 124
Diastrophus Rubi .......................................... 124
RhoditesRosae .................................... 125
„ Eglanteria .................................... 125
,, Rosarum.......................................... 125
Cecidomyia Rosarum ......................................... 126
Asphondylia Pimpinellae .................................... 126
Hormomyia Millefolii ...................................... 127
Urophora Cardui .......................................... 128